Back to results
US 7,453,450 B2Granted
Display apparatus
AssigneesSanyo Electric Co., Ltd., Tottori Sanyo Electric Co., Ltd.
InventorsYutaka Sano, Satoshi Morita
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneesSanyo Electric Co., Ltd., Tottori Sanyo Electric Co., Ltd.
InventorsYutaka Sano, Satoshi Morita
Estimating the term…
A liquid crystal display apparatus is constituted whereby multiple source driver circuits provided with a driver IC are connected to the periphery of a liquid crystal display panel, and power supply voltages supplied from the outside are sequentially supplied from a specific source driver circuit to an adjacent source driver circuit, and a wire resistance calculation wire is formed for the driver IC in the voltage supply direction upstream, and is approximately equivalent to the signal wires extending from the upstream driver IC to the adjacent driver IC in the voltage supply direction downstream. The driver IC calculates the wire resistance by impressing a certain calculated voltage to one end of the wire resistance calculation wire, and then detects the voltage on the other end, calculates the amounts of the drop in voltage level based on the calculated wire resistance, and outputs the power supply voltages increased by the calculated respective amounts of the voltage drop to the downstream driver IC. Accordingly, a display apparatus is provided for preventing a drop in the power supply voltages sequentially supplied, thereby inhibiting malfunctioning of the driver ICs, resulting in improved display quality.
A display apparatus configured in such manner that a plurality of adjacent driver circuits, each mounting a driver IC on a circuit board are connected to the periphery of a display panel, said adjacent driver circuits being connected to each other by a connection wire formed on the said display panel, while a power supply voltage required for driving the said driver ICs and the said display panel is supplied from an external control circuit to at least one of the said driver circuits, and sequentially supplied from one of the said driver circuits to the driver circuit adjacent thereto, wherein:
A display apparatus configured in such manner that a plurality of adjacent driver circuits, each mounting a driver IC on a circuit board, are connected to the periphery of a display panel, said adjacent driver circuits being connected to each other by a connection wire formed on the said display panel, while a power supply voltage required for driving the said driver ICs and the said display panel is supplied from an external control circuit to at least one of the said driver ICs, and sequentially supplied from one of the said driver ICs to the driver IC adjacent thereto, wherein:
Dependencies are inferred from the claim text.